:root{color-scheme:light dark;--bg: #f4f6f9;--surface: #ffffff;--ink: #131c2b;--muted: #6b7889;--line: #d7dde6;--accent: #0d6f7d;--accent-ink: #075561;--accent-soft: #e0f0f2;--good: #2c6e49;--good-soft: #e2f0e8;--bad: #a33a3a;--bad-soft: #f7e5e5}@media (prefers-color-scheme: dark){:root{--bg: #0d1420;--surface: #131c2a;--ink: #e7ecf3;--muted: #8090a3;--line: #273347;--accent: #0d6f7d;--accent-ink: #8ddbe5;--accent-soft: #11333a;--good: #6cc294;--good-soft: #122b20;--bad: #e08585;--bad-soft: #2e1a1a}}body{margin:0;min-height:100vh;display:grid;place-items:center;background:var(--bg);color:var(--ink);font-family:Hiragino Sans,Helvetica Neue,Arial,sans-serif}.card{background:var(--surface);border:1px solid var(--line);border-radius:4px;padding:40px 44px;max-width:480px;margin:24px}.badge{display:inline-block;font-family:ui-monospace,Menlo,monospace;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--accent-ink);background:var(--accent-soft);padding:3px 9px;border-radius:3px;margin-bottom:18px}h1{margin:0 0 8px;font-size:30px}p{line-height:1.8;margin:0 0 20px}.hint{font-size:13px;color:var(--muted)}button{font:inherit;font-weight:700;cursor:pointer;background:var(--accent);color:#fff;border:0;padding:10px 22px;border-radius:3px}button:hover{opacity:.88}dl{margin:24px 0 0;padding-top:20px;border-top:1px solid var(--line);display:grid;grid-template-columns:auto 1fr;gap:8px 16px;font-size:13px}dt{color:var(--muted);font-family:ui-monospace,Menlo,monospace;font-size:11px}dd{margin:0}code{font-family:ui-monospace,Menlo,monospace;font-size:12px}